Web-roll-controlling mechanism



March 3 o. C.-ROESEN WEB ROLL CONTROLLING MECHANISM 2 Sheets-Sheet 1INVENTOR @MMCW Filed Aug. 24, 1926 March 3, "1931. o. c. ROESEN1,794,644-

WEB ROLL CONTROLLING MECHANISM Filed Aug. 24 192 2 Sheets-Sheet 2Patented Mar. 3, 1931 UNITED STATES PATENT OFFICE OSCAR C. ROESEN. OFBROOKLYN. NEW YORK, ASSIGNOR TO HOE &; 00., INCL, OF

NEW YORK, N. Y.. A CORPORATION OF NEW YORK' WEB-ROLL-CONTROLLINGMECHANISM Application filed August 24, 1926. Serial No. 131,217.

Thisinvention relates tocertain improvements in web roll controllingmechanism particularly adapted for rotary printing machines.

In rotary printing machines, the web is supplied from a web rollconveniently mounted adjacent the printing mechanism. These web rolls,to effect a proper running of the web, are controlled so, as to run atpress speed, that is, the web is supplied to the press at the speed atwhich the press cylinders are running, various devices, such as frictionbelts, being employed for controlling the speed of the unwinding webroll, these devices being driven from the press and'at press speed. Onthe sudden stoppage of the press,

due to breakage of the web or for other reasons, such stops beinggenerally known as emergency stops, the web rollruns ahead of thefriction devices, with the result that the web of paper is floodedthrough the machine causing wraps or breaks, or if these do not occur,suflicient roll unwinds so that it has to be rewound by hand until theweb has the necessary tension.

It is the special object of the present invention to provide anelectrically operated mechanism actuated on the stoppage of the press,by which the speed of the friction devices is slowed down so as to beless than that of the unwinding roll, the friction devices thus actingas a brake and stopping the rotation of the roll, thereby preventingthis objectionable flooding or overrunning of the web.

It is a further object of the invention to provide a construction ofsimple form, the parts of which are readily installed and which can beadded to machines in use as well as new machines.

\Vith these" and other objects not specifically referred to, theinvention consists in certain novel parts, arrangements and combinationswhich will be described in connection with the accompanying drawings andthe novel features pointed out in the claims hereto appended.

In these drawings;-

Figure 1 is a diagrammatic side elevation of a multi-unit printingmachine showing the invention applied thereto;

- web roll.

Figure 2 is an enlarged end view of the controlling mechanism shown inFig. 1, the view being taken in the direction of arrow 2 of that figure;

Figure 3 is a side view of part of the construction shown in Fig. 2, theview being taken in the direction of arrow 3 of that figure, and partlyin section;

Figure 4 is a plan view, partly in section, of part of the constructionshown in Fig. 3; Figure 5 is a detail end View of a'brake mechanismwhich may be employed, and

Figure 6 is a detail side View, partly broken away, of a modified formof construction in which suitable gearing is employed in lieu of thebrake shown in the other figures.

Referring now to these drawings, the machine which has been selected toillustrate the invention includes a multi-unit printing machine in whichthe Web roll supply is located below the printing units, although itwill be understood that the invention is applicable to any printingmechanism in which the paper is fed to the press from an unwinding Inthis machine there is shown a printing unit A including printing andperfecting couples, the form cylinders of which are indicated by thenumeral 1 and the impression cylinders by the numeral 2, and a printingunit B including printing and perfecting couples, the form cylinders ofwhich are indicated by the numeral 3 and the impression cylinders by thenumeral 4. These printing presses are supplied by webs A and B runningfrom web rolls R and R suitably supported in standards 5, 6 located inthe present instance below the printing mechanism, these standards inthe present construc tion being capacitated to support one or more sparerolls, indicated by the letter S. From the press the webs may go oversuitable guide rolls 7 to a folder 8.

Frictional devices engaging the surface of the running web roll areemployed to control the speed of the roll as it unwinds, these devicesbeing driven from the press and at press speed. While these frictiondevices may be of various characters, they are preferably in the form ofnarrow belts 9 and 10, a set of these belts being provided for eachrunning roll throughout the ress. These belts are preferably endlesselts and are driven at the press speed. While various mechanisms may beemployed for effecting this, in the particular construction illustrated,the belts at one end pass over driving pulleys 11, 12, see Fig. 2, on adriven shaft 13. At the other end, these belts pass over pulleys 14, 15on a shaft 16 which is hung in bearings in the lower end of arms 17, 18pivotally supported at their upper ends on the shaft 13, before referredto. This shaft 13 is supported in suitable bearings 19 in framing 20 andat its outer end is provided with a miter 21 which meshes with a miter22 on a vertical shaft 23 which is driven by a miter 24 from a miter 25on a power shaft 26, see Fig. 1. With this construction, the frictionbelts are driven at the press speed and thus operate to control the rollat the speed of the press.

In accordance with the invention, means are provided for causing aslowing down or stoppage of these belts in the event of stoppage of thepress, so that these belts will act to effect a braking pressure on theroll and thus prevent any overrunning of the roll and, 'in the preferredconstruction, these means will be electrically operated so as to actvery quickly. While the specific construction of the mechanism foreffecting this may be somewhat varied, the construction willpreferablybe the same for all the rolls, and a description of apreferred form and a modification of a convenient mechanism will now begiven, as applied to one of the rolls.

Referring first to Figs. 1 to 5 inclusive, stoppage of the press iselectrically controlled, a stop switch, indicated at 27 in Fig. 1, beingprovided at the folder, although, of course, such switch or switches maybe provided at any suitable or desirable point in the press. The circuitfor this switch is indicated by the letters a, b, and this circuitincludes what may be termed a master solenoid 28, this solenoid beingcommon to all the roll driving mechanisms of the press and in turnoperating devices whereby all the rolls are simultaneously braked.

In the particular construction illustrated, the roll shaft 13, by whichthe roll is driven, is provided with a brake drum 30 which is providedwith a brake band 31. The hub 32 of this drum is keyed to shaft 13 by akey 33, and the outer face of this drum forms one element 34 of a jawclutch. The other element 35 of this jaw clutch is formed on a hub 36slidably'mounted on the shaft 13, the hub being provided with a groove37 in which operates a yoke 38, so that by the operation of this yokethe jaw clutch may be unclutched to disconnect the shaft 13 and thusstop the driving of the friction belts. At the same time the brake band31 is tightened on the drum 30 so as to stop the belts and thus, thefriction belts being stationar act to stop the rotation of the web roll.11 the best constructions, means for effecting these two functions areelectrical, being controlled from the master solenoid 28, and, as shown,there is provided an operating solenoid 39 for each set of frictionbelts, that is, one of these controlling solenoids is provided for thebelts of each running web roll, all these solenoids 39 being in circuitwith the master solenoid so that all are actuated from the mastersolenoid simultaneously.

The connections from the master solenoid 28 are shown in Figures 1 and3, and, as there illustrated, the plunger 100 of the solenoid 28 isprovided with bridging contacts 101, one of these contacts beingprovided for each of the roll supplies, two such contacts beingillustrated for the two sources of web supply illustrated in thedrawings. These ridging contacts, on the energizing of the solenoid 28through the line a, b and switch 27, engage fixed contacts 102, closinga circuit, indicated at 0, d, which effects the enerizing of theoperating solenoid 39. It will fie observed that on the energizing ofthese operating solenoids the cores of these solenoids move upwardly andoperate certain mechanism which will hereinafter be described forproducing the desired stopping action on the belts.

In the construction shown in Figs. 2 to 5, this solenoid 39 acts to slipthe clutch jaw 35 and to apply the brake band 31 through suitablemechanical connections. These connections may be of various forms, but aconvenient arrangement is that shown, in which intermediate the ends ofthe operating rod 40 of'the solenoid 39 is pinned thereto one to. Withthis construction, as the solenoid- 39 is energized, the arm 47 isoperated to compress the brake band around the drum, and this brake bandstopping the shaft 13. Simultaneously the clutch 35 is slipped to stopthe drive of the shaft 13. In the construction shown for effecting this,the operating rod of the solenoid is extended, as shown at 49 in Fig. 3,and the end of this rod carries an arm 50 on an arm hub 51 on a shaft 52on which is carried the yoke arm 38, before referred to, so that as thesolenoid is actuated the arm 50 is moved, thus causing the yoke arm 38to is shown which may be employed for effects ing a braking action onthe belts instead of the brake construction heretofore described. In thedonstruction shownin this figure, means are provided for changing theratio of the gears which drive the belt shaft 13, so that in the eventof a quick stop of,.the press the shaft is slowed down so as to causethe belts to, exert suflicient pressure against the running roll to stopthe.roll and prevent overrun of the web. While the gear constructionsemployed for this purpose may vary, in the particular constructionillustrated, the shaft 13 is driven from the miters 21, 22 as beforedescribed. In this construction, however, the hub 32 of the jaw clutch34 is provided with a large .gear 54. This gear is in mesh with a smallgear fast on a counter-shaft 56 suitably supported in bearings 57mounted in brackets 58 suitably secured to the framing 45. The hub 59 ofthe gear 55 carries one member 60 of a jaw clutch. The other member 61of this jaw clutch is slidable on the shaft, and the hub thereof isprovided with a groove 62 to receive a yoke arm 63, this yoke arm beingcarried on a rock shaft 64 which is operated by the rod 40 of thesolenoid 39 before described through arm 41. This rock shaft 64 alsocarries a yoke arm 65 for operating the movable member 35 of the jawclutch on the shaft 13. The shaft 56 is provided with a miter 66 whichis in mesh with a miter 67 on the shaft 23, which, as before stated, isdriven atpress speed. With this construction, when the solenoid 39 isactuated, the parts are in the position shown in Fig. 6, the clutches34, 35 being unclutched and the clutches 60, 61 clutched. The drive thenis through clutches 60, 61, gear 55 and large gear 54, and the ratio ofthese gears is such as to effect a braking action on the shaft 13. Withthis construction, there has been provided a simple and convenientmechanism for effecting the braking of the running web roll so that theWeb roll is stopped and overrun prevented.

While the invention has been shown in its preferred form, it will beunderstood, of course, that various modifications in the character andarrangen'lent of the braking device are within the invention as definedby the annexed claims and the invention is not to be restricted to theconstructions and arrangements shown and described.

What I claim is:

1. In a web roll controlling mechanism for printing machines, thecombination of means for supporting a web roll while unwinding, afriction device engaging the surface of the roll for controlling theroll as it unwinds, means for driving the device at substantially pressspeed, and an electrically operated device normally inactive butactuated on the stoppage of the press to cause the driving device tooperate the friction devices with an increased resistance to the rotarymovement of the roll and thus act as a brake for the roll to stop itsrotation.

2. In a web roll controlling mechanism for printing machines, thecombination of means for supporting a plurality of web rolls whileunwinding, friction devices engaging the surfaces of the rolls forcontrolling the rolls as they unwind, means for driving the devices atsubstantially press speed, and electrically operated devices normallyinactive but simultaneously actuated on the stoppage of the press tocause the driving means to operate the friction devices with anincreased resistance to the rotary movement of the rolls and thus act asa brake for the rolls to stop their rotation.

3. In a web roll controlling mechanism for printing machines, thecombination of means for supporting a web roll while unwinding, afriction device engaging the surface of the roll for controlling theroll as it unwinds, means for driving the device at substantially pressspeed, a breaking mechanism arranged to be brought into braking relationwith the driving means and providing an increased resistance to therotary movement of the roll and an electrically operated device foractuating the driving means to operate the braking mechanism.

4. In a web roll controlling mechanism for printing machines, thecombination of means for supporting a plurality of web rolls whileunwinding, a friction device engaging the surface of the rollsas theyunwind, means for driving the device at substantially press speed, abraking mechanism arranged tobe brought into braking relation with thedriving means and providing an increased re sistance to the rotarymovement of the roll, and an electrically operated device actuated onthe stoppage of the press for simultaneously causing the friction deviceto operate at a speed less than the speed of the rolls and thus act as abrake for the rolls to stop their rotation.

5. In a web roll controlling mechanism for printing machines, thecombination of means for supporting a web roll while unwinding, afriction device engaging the roll for controlling the speed of the rollas it unwinds, means for driving. the device at substantially pressspeed, a solenoid connected with the emergency switch of the press, anoperating sole- 1 noid actuated therefrom, and connections through whichthe operating solenoid acts to cause the friction device to operate ata'speed less than the speed of the roll and thus act to stop therotation of the roll.

6. In a web roll controlling mechanism for printing machines, thecombination of means for supporting a plurality of web rolls whileunwinding, friction devices engaging the rolls for controlling the speedof the rolls as they unwind, means for driving the devices atsubstantially press speed, a master solenoid connected with theemergency switch of the press, an operating solenoid for each runningroll simultaneously actuated by the master solenoid, and connectionsthrough which the operating solenoids act to cause the friction devicesto operate at a speed less than the speed of the rolls and thus act tostop the rotation of the rolls.

7. In a web roll controlling mechanism for printing machines, thecombination of means for supporting a web roll while unwinding, afriction device engaging the roll for controlling the speed of the rollas it unwinds, a power shaft for driving the device at substantiallypress speed, a driven shaft by which trolling the speed of the roll asit unwinds, a main ower shaft, a power shaft for driving the frictiondevice of each roll driven from the main shaft, a driven shaft for eachroll, a clutch connecting each driven shaft with its driver, a mastersolenoid connected with the emergency switch of the press, and anoperating solenoid for the shaft of each running roll, the operatingsolenoids being simultaneously actuated from the master solenoid forslipping the clutches and simultaneously disconnecting the driven shaftsfrom their drivers.

In testimony whereof, I have hereunto set In hand.

y OSCAR C. ROESEN.

power shaft for driving the device at sub- 7 stantially press speed, a.driven shaft by which the device is driven, a clutch connecting theshafts, a brake on the driven shaft, a solenoid, means for energizingthe solenoid and connections operated from the solenoid for slipping thechltch and applying the brake to the driven shaft,

9. In a web roll controlling mechanism for printing machines, thecombination of means for supporting a web roll while unwinding, afriction device engaging the roll for controlling the speed of the rollas it unwinds, a power shaft for driving the device at substantiallypress speed, a driven shaft by which the device is driven, a clutchconnecting the shafts, a brake on the driven shaft, a solenoid,

means for energizing the solenoid, an operating rod therefor, an armon-the rod connected to the clutch and an arm on the rod connected tothe brake.-

for printingmachines, the combination of means for supporting a Web rollwhile unwinding, friction belts engaging the roll surface forcontrolling the speed of the roll as it unwinds, a power shaft, a drivenshaft, driving pulleys on the driven shaft engaging the friction belts,a jaw clutch on the driven shaft, a brake on the driven shaft, asolenoid, an operating rod therefor, an arm on the rod having a yokeengaging the clutch, and an arm on the rod engaging the brake.

11.In' a web roll controllin mechanism for printin machines, the comination of a plurality 0 roll stands for supporting a pluralityofrunning rolls while. unwinding, a

friction device'- for each running roll for con-

